CN212000366U

CN212000366U - Vertical net clamping dewatering mechanism

Info

Publication number: CN212000366U
Application number: CN202020570987.1U
Authority: CN
Inventors: 李文斌
Original assignee: Guangdong Lee and Man Paper Manufacturing Co Ltd
Current assignee: Guangdong Lee and Man Paper Manufacturing Co Ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-24
Anticipated expiration: 2030-04-16

Abstract

The utility model provides a vertical net clamping dewatering mechanism, which comprises a head box, a forming net, a horizontal roller, a dewatering roller and a guide roller, the horizontal roller is arranged on one side of the dewatering roller, the guide roller is arranged below the dewatering roller, the forming net is sleeved among the horizontal roller, the dewatering roller and the guide roller, the head box is arranged on one side of the forming net, one side of the dewatering roll is provided with a water filtering mechanism, the water filtering mechanism comprises a water filtering roll set and a clamping net, the clamping net is sleeved on the water filtering roll set, the wire is in contact with the forming wire on the dewatering roll to form a dewatering zone for dewatering the web, the centrifugal dewatering of the wet paper web is realized through the centrifugal action of the dewatering roll and the separation action of the clamping net, the paper web humidity when the wet paper web enters the drying and dewatering process is reduced, and then the purpose of saving the subsequent steam consumption is realized.

Description

Vertical net clamping dewatering mechanism

Technical Field

The utility model relates to a papermaking equipment field, concretely relates to vertical press from both sides net dewatering mechanism.

Background

The papermaking industry is a large energy-consuming household, steam consumption is one of resource consumption, resource saving is the requirement for building a resource-saving and environment-friendly society, how to reduce resource waste is also an examination faced by the papermaking industry, and along with the improvement of environmental awareness of people, energy conservation and emission reduction are also the basis of sustainable development of the papermaking industry.

In the papermaking process, the paper dewatering modes mainly comprise scraper dewatering, vacuum dewatering, extrusion dewatering and drying dewatering, wherein the drying dewatering is a necessary process, theoretically, every time the water content of the paper web is reduced by 1%, the steam consumption of the paper web can be saved by 5% when the paper web is dried, and therefore, how to reduce the water content of the paper web from the forming wire as far as possible is a very important matter.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a vertical double-layered net dewatering mechanism has realized the purpose of the centrifugal dehydration of wet paper web through the centrifugation of dehydration roller and the separation effect of double-layered net.

The technical scheme of the utility model is realized like this:

a vertical type mesh clamping dehydration mechanism comprises a pulp flowing box, a forming mesh, a horizontal roller, a dehydration roller and a guide roller, wherein the horizontal roller is arranged on one side of the dehydration roller, the guide roller is arranged below the dehydration roller, the forming mesh is sleeved among the horizontal roller, the dehydration roller and the guide roller, the pulp flowing out of the pulp flowing box flows into the forming mesh to form a wet paper web, the forming mesh advances forwards, a water filtering mechanism is arranged on one side of the dehydration roller and comprises a water filtering roller set and a mesh clamping unit, the mesh clamping unit is sleeved on the water filtering roller set, the mesh clamping unit is in contact with the forming mesh on the dehydration roller to form a dehydration area for dehydrating the paper web, when the wet paper web on the forming mesh passes through the dehydration roller, under the action of centrifugal force during high-speed rotation of the dehydration roller, the water in the wet paper web is thrown out of the surface of the wet paper web, and because the outer surface of the forming net on the dewatering roll is tightly attached with the clamping net, the paper fibers in the wet paper web are remained on the forming net under the blocking action of the clamping net, and the water in the wet paper web is thrown out of the dewatering roll through the pores in the clamping net, thereby realizing the aim of centrifugal dewatering, reducing the paper web humidity when the wet paper web enters a drying and dewatering process, and further realizing the aim of saving the subsequent steam consumption.

Further, the water filtering roller group comprises an upper water filtering roller and a lower water filtering roller, the upper water filtering roller is arranged on one side, close to the horizontal roller, above the dewatering roller, the lower water filtering roller is arranged below the dewatering roller, the upper water filtering roller and the lower water filtering roller are both positioned at the outer side of the forming net, the clamping net is sleeved between the upper water filtering roller and the lower water filtering roller, after the arrangement, the mesh can be tightly attached to the forming wire, and in the process that the wet paper web passes through the dewatering roll, because the upper surface of the forming net which is contacted with the dewatering roller is tightly attached with the clamping net, under the action of centrifugal force, moisture is thrown out of the dewatering roller through the pores in the clamping net, and the paper fiber in the wet paper web is retained in the forming wire under the blocking effect of the wire, moves downwards along with the forming wire and then enters the next working procedure.

Further, still include the water receiving tank, the water receiving tank sets up the below of dehydration roller, and be located press from both sides the inboard of net, the water receiving tank is used for receiving the moisture that is thrown out by the dehydration roller to avoid taking place the problem that moisture reentrant the paper web in follow-up dehydration process, in order to ensure that moisture can be complete break away from out the paper web.

Further, a vacuum box is arranged below the dewatering roll, a negative pressure port of the vacuum box is attached to the inner side surface of the forming net, the negative pressure port of the vacuum box is contacted with or attached to the inner side surface of the forming net, specifically, the vacuum box is positioned at the separation position of the forming net and the clamping net right below the dewatering area, and the negative pressure port of the vacuum box contacts or is attached to the inner side surface of the forming wire, the paper web moves downwards along with the forming wire after being centrifugally dewatered by the dewatering roll, because the clamping net can be separated from the forming net below the dewatering roller, in order to avoid the problem that the paper web is adhered to the clamping net in the process of separating the forming net from the clamping net, therefore, the negative pressure port of the vacuum box is arranged at the separation part of the forming net and the clamping net, and the paper web can be tightly attached to the forming net under the negative pressure suction action of the vacuum box due to the fine holes of the forming net, so that the problem that the paper web is adhered to the clamping net and is carried away from the forming net by the clamping net is avoided.

Further, still include a plurality of tensioning rollers, the shaping net with all be equipped with on the press from both sides the tensioning roller, tensioning roller are used for adjusting the joint force between shaping net or the press from both sides net and its corresponding roller set to improve the operating stability of shaping net and press from both sides the net.

The utility model has the advantages that: the centrifugal action through the dewatering roll and the separation effect of double-layered net, the purpose of the centrifugal dehydration of wet paper web has been realized, reduce the paper web humidity when wet paper web gets into the dehydration process of drying, and then realize the purpose of saving follow-up steam consumption, the water receiving tank plays the effect that prevents moisture reentrant subsequent dehydration process, in order to ensure that moisture can be complete break away from out the paper web, the vacuum chamber is favorable to wet paper web to realize hugging closely the purpose of forming net, in order to avoid appearing the paper web adhesion on the double-layered net and by the problem that the double-layered net area leaves the forming net.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of a vertical wire clamping dewatering mechanism of the present invention.

The attached drawings are as follows: 1. a head box; 2. forming a net; 3. a horizontal roll; 4. a dewatering roll; 5. a guide roller; 6. a wet paper web; 7. clamping a net; 8. an upper water filtering roller; 9. a lower water filtering roller; 10. a water receiving tank; 11. a vacuum box; 12. and (5) tensioning the rollers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, a vertical type wire-clamping dewatering mechanism comprises a head box 1, a forming net 2, a horizontal roller 3, a dewatering roller 4 and a guide roller 5, wherein the horizontal roller 3 is arranged at one side of the dewatering roller 4, the guide roller 5 is arranged below the dewatering roller 4, preferably, the guide roller 5 is arranged right below the dewatering roller 4, the forming net 2 is sleeved between the horizontal roller 3, the dewatering roller 4 and the guide roller 5, the head box 1 is arranged at one side of the forming net 2, paper pulp from the head box 1 flows onto the forming net 2 to form a wet paper web 6, the wet paper web 6 advances along with the forming net 2 under the driving of an external driving roller (not shown in the drawing), wherein, the power source of the external driving roller can be a driving system such as a motor, the forming net 2 is provided with pores (not shown in the drawing), the pores also have the function of conveniently filtering water on the wet paper web 6, the side of the dewatering roller 4 is provided with a water filtering mechanism, the water filtering mechanism comprises a water filtering roller group and a clamping net 7, the clamping net 7 is sleeved on the water filtering roller group, the clamping net 7 is in contact with the forming net 2 positioned on the dewatering roller 4 to form a dewatering area for dewatering the paper web, when the wet paper web on the forming net 2 passes through the dewatering roller 4, under the action of centrifugal force when the dewatering roller 4 rotates at high speed, the water in the wet paper web 6 is thrown out of the surface of the wet paper web 6, the clamping net 7 is attached to the outer surface of the forming net 2 positioned on the dewatering roller 4, the paper fiber in the wet paper web 6 is retained on the forming net 2 under the blocking effect of the clamping net 7, and the water in the wet paper web 2 is thrown out of the dewatering roller 4 through pores in the clamping net 7, so that the purpose of centrifugal dewatering is realized, the paper web humidity when the wet paper web 6 enters a drying and dewatering process is reduced, the purpose of saving subsequent steam consumption is realized, and energy.

Preferably, the water filtering roller group comprises an upper water filtering roller 8 and a lower water filtering roller 9, the upper water filtering roller 8 is arranged on one side of the upper part of the dewatering roller 4 close to the horizontal roller 3, the lower water filtering roller 9 is arranged below the dewatering roller 4, the upper water filtering roller 8 and the lower water filtering roller 9 are both arranged on the outer side of the forming net 2, the clamping net 7 is sleeved between the upper water filtering roller 8 and the lower water filtering roller 9, after the arrangement, the clamping net 7 can realize the purpose of clinging to the outer surface of the forming net 2 on the dewatering roller 4, in the aspect of operation of the clamping net 7, as the clamping net 7 clings to the forming net 2, the clamping net 7 can synchronously operate with the forming net 2 under the action of friction force when the forming net 2 operates, of course, a driving system can also be designed on the water filtering mechanism to realize the purpose of synchronous operation with the forming net 2, in the process that the wet paper web 6 passes through the dewatering roller 4, as the clamping net 7 clings to the upper surface of the forming net 2 contacting with the dewatering roller 4, the wet paper web 6 is sandwiched between the forming wire 2 and the clamping wire 7, the moisture in the wet paper web 6 is thrown out of the dewatering roll 4 through the fine holes in the clamping wire 7 by the centrifugal force of the dewatering roll 4 rotating at high speed, and the paper fibers in the wet paper web 6 are retained in the forming wire 2 and move down with the forming wire 2 by the blocking action of the clamping wire 7, and then enter the next process.

Preferably, the dewatering device further comprises a water receiving tank 10, the water receiving tank 10 is arranged below the dewatering roller 4 and is located on the inner side of the clamping net 7, and the water receiving tank 10 is used for receiving the water thrown out by the dewatering roller 4 so as to avoid the problem that the water reenters the paper web in the subsequent dewatering process and ensure that the water can completely separate from the wet paper web 6.

Preferably, a vacuum box 11 is arranged below the dewatering roll 4, a negative pressure port (not shown in the drawing) of the vacuum box 11 is attached to the inner side surface of the forming wire 2, the negative pressure port of the vacuum box 11 is contacted with or attached to the inner side surface of the forming wire 2, specifically, the vacuum box 11 is arranged at the separation position of the forming wire 2 and the clamping wire 7 right below the dewatering area, and the negative pressure port of the vacuum box 11 is contacted with or attached to the inner side surface of the forming wire 2, after the paper web is centrifugally dewatered by the dewatering roll 4, along with the downward movement of the forming wire 2, because the clamping wire 7 is separated from the forming wire 2 below the dewatering roll 4, in order to avoid the problem that the wet paper web 6 is adhered to the clamping wire 7 in the separation process of the forming wire 2 and the clamping wire 7, the negative pressure port of the vacuum box 11 is arranged at the separation position of the forming wire 2 and the clamping wire 7, and because the forming wire 2 itself has fine holes, the wet paper web 6 is sucked by the negative, the purpose of being in close contact with the forming wire 2 is achieved in order to avoid the problem that the web of wet paper 6 adheres to the wire 7 and is carried away from the forming wire 2 by the wire 7.

As a preferable scheme of this embodiment, the forming device further comprises a plurality of tension rollers 12, the forming wire 2 and the clamping wire 7 are both provided with the tension rollers 12, and the tension rollers 12 are used for adjusting the joint force between the forming wire 2 or the clamping wire 7 and the corresponding roller group so as to improve the operation stability of the forming wire 2 and the clamping wire 7.

The working principle is as follows: the guide roll 5 is arranged below the dewatering roll 4, so that the forming net 2 can realize the purpose of turning when passing through the dewatering roll 4. The paper pulp from the head box 1 flows to the forming net 2 to form a wet paper web 6, the driving roller drives the forming net 2 to run under the driving action of the external driving roller, the wet paper web 6 advances forwards along with the forming net 2, and because the forming net 2 at the position of the dewatering roller 4 is closely attached with the clamping net 7, when the wet paper web 6 on the forming net 2 passes through the dewatering area at the position of the dewatering roller 4, the water on the wet paper web 6 is thrown out of the wet paper web 6 under the action of centrifugal force, the paper fiber is kept on the forming net 2 under the blocking action of the clamping net 7 and is conveyed to the next procedure, namely, the wet paper web 6 realizes the purpose of centrifugal dewatering under the action of the centrifugal force of the dewatering roller 4 and under the blocking action of the clamping net 7.

The beneficial effects of this embodiment: the centrifugal action through the dewatering roll and the separation effect of double-layered net, the purpose of the centrifugal dehydration of wet paper web has been realized, reduce the paper web humidity when wet paper web gets into the dehydration process of drying, and then realize the purpose of saving follow-up steam consumption, the water receiving tank plays the effect that prevents moisture reentrant subsequent dehydration process, in order to ensure that moisture can be complete break away from out the paper web, the vacuum chamber is favorable to wet paper web to realize hugging closely the purpose of forming net, in order to avoid appearing the paper web adhesion on the double-layered net and by the problem that the double-layered net area leaves the forming net.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a vertical double-layered net dewatering mechanism, includes the head box, its characterized in that still includes forming wire, horizontal roller, dehydration roller and guide roll, the horizontal roller is established dehydration roller one side, the guide roll is established the below of dehydration roller, the forming wire cup joints horizontal roller, dehydration roller and between the guide roll, the head box sets up one side of forming wire, dehydration roller one side is equipped with drainage mechanism, drainage mechanism includes drainage roller set and double-layered net, it cup joints to press from both sides the net on the drainage roller set, press from both sides the net with be located on the forming wire contacts in order to form the dehydration district that is used for the paper web dehydration.

2. The vertical wire clamping dewatering mechanism according to claim 1, wherein the water filtering roller set comprises an upper water filtering roller and a lower water filtering roller, the upper water filtering roller is arranged on one side above the dewatering roller close to the horizontal roller, the lower water filtering roller is arranged below the dewatering roller, the upper water filtering roller and the lower water filtering roller are both positioned on the outer side of the forming wire, and the wire clamping sleeve is sleeved between the upper water filtering roller and the lower water filtering roller.

3. The vertical wire clamping dewatering mechanism according to claim 1 or 2, further comprising a water receiving tank, wherein the water receiving tank is arranged below the dewatering roller and is positioned on the inner side of the wire clamping.

4. The vertical wire-clamping dewatering mechanism as claimed in claim 1 or 2, wherein a vacuum box is arranged below the dewatering roll, and a negative pressure port of the vacuum box is attached to the inner side surface of the forming wire.

5. The vertical wire-clamping dewatering mechanism according to claim 1, further comprising a plurality of tensioning rollers, wherein the tensioning rollers are arranged on both the forming wire and the wire-clamping.